So I don't know maybe I'm the asshole, but I live with my parents. I'll be 50 on Friday, me and my 16 year old daughter because I got custody of her. I don't know, somewhere around COVID time, and her father died suddenly, and I think she has a little bit of reactive attachment disorder, but her official classifications per school district, I guess, is DMDD. and she's like got an IP for... an emotional disturbance.

She's been physically aggressive with me. She put her hands on me. I'm currently in therapy for a TBI that I believe was caused by her.

I lost bladder control three times when she struck me in the back of the head when I was driving. She just turned 16. My parents already bought her a car.

She gets everything she wants. And... people seem to deflect the severity of it. She's been entangled in the court systems already, had a probation officer anyway, it's obviously not the ideal living situation, but because I had some heart issues that ended up in the emergency room.

I have been out of work for two and a half years, and due to financial obligations, I'm not able to move us at this time, so we're living with my parents. Fast forward to last week after three years with no break, not even an overnight somewhere. I could visit a friend who lives two hours away within the first 24 hours.

My team is calling me. I need to send her $50 to get the morning after pill, and I'm overdrawn in all my bank accounts anyway, needless to say, no R&R. The next time my mom calls me and said that I accidentally left my key in the door to my room, and I guess that means that I wanted her to clean it.

I said no, and my kid called me and showed me eight trash bags lined up in my room, completely cleaned. They both promised me that I would have a chance to look through my things before anything was thrown away. That was a lie.

I came home to three bags. Everything else was gone. That's just such a hurt piece.

I really can't even look at my mom. And then, like, I go to get something out of the drawer, and there's all of my batteries, like, stuff that I use every day. I get out of the shower every time I take a shower here.

I notice something else missing, and I just break down and cry, because it's just such an invasion of privacy, and... And my eyes crosses every line, and like, unless you've had it done to you, you can't understand it, and like my kid has had it done to her. But my parents just put her stuff into the shed.

They didn't throw anything away. So I thought she got it and it's like I don't even wanna exist in this house anymore. I hate it here all the time, and I was hysterical the other day, my dad's like, do you want me to call somebody?

I'm like no, I just want a family that loves me. That's all I want. Even one person in the world.

Would make a difference, but I don't have anybody, but I just don't even know how to handle this.

So this morning, I (21M) accidentally lifted my head up a little too fast from my pillow after already having lifted it and lowered it halfway once (I'm being this specific because it's important, since I don't think it's as severe as an actual concussion/TBI) and immediately after I started feeling a slight ache in the back of my head/neck. It's not super serious or anything but it's enough that I still kinda feel it hours later. Anyway, just now after I got out of the shower, I started seeing a bunch of tiny floaters before my eyes. It's important to note that my vision is still perfect besides the floaters, but I'm still worried. I found out that the optical lobe (which is where your brain controls your eyesight) is in the back of my head, and now that coupled with the floaters, I'm worried I'll go blind. Does anyone who's experienced anything like this before have any idea if this will actually happen? Thank you.

Any thought if this can be considered as Post-traumatic Amnesia already. She was side-swept by a tricycle while driving to work yesterday, no definite timeline was presented if how long was she unconscious. She was later then rushed for CT, came out clean with no notable findings, however since yesterday, she was repeating every question and statement, and if asked kung what happened or how it happened di niya maalala, also even events that had happened weeks and months ago, she can't remember.

Please help me understand what this is, still waiting maka rounds and Neuro doctor for referral.

Heh, I think we all know what it's like to get into several of your heads at the same time. Tiamat, that's my spiritual animal 😎 . I will keep this to the point.

My short term memory has now been a thing for six years now, so it's me now. But know what? My long term memory especially this last year has been pouring back in. I'll spare you the bad stuff, but the good things? I remember more James Joyce than I thought possibly. And for those who know, you know, more Homer than I expected. (Oh Brother Where Art Thou! is do for a repeat 😆)

I used to be a non famous professional saxophonist. I hadn't played in ten years, and have made substantial improvements in double tonguing and circular breathing. I credit Dragonforce (no, really. Try circular breathing and doing ta-ka-tik-ka... Over those guys).

It may not sound like it here on occasion, but my structured and creative writing.. I just... Ten years ago I couldn't do what I did today.

I enjoy nature more than I ever thought possible. And every syllable I hear from a stranger's voice tears my face into a smile.

Now, I will continue my brooding like an Anne Rice novel.

i suffered a severe TBI 2.5 years ago. after waking up from the coma and engaging in rehab, i realised i have a hole in my memory: from the day of the injury back ~8 months, could be more.

the memories i lost include a lot of painful ones but also a lot of joyful moments: i threw a big party with my friends for my 18th birthday, i saw some photos and i was really looking happy and weightless. i don’t remember a single thing of it. i had a whole romantic relationship with a boy and i don’t remember a single thing of it.

i’ve once asked my neurologist about this and she brushed it off saying it’s called dissociative amnesia and the memories will come back, sometime, somehow.

i’ve also asked an ICU doctor about this and he told my my neurologist’s didn’t really answer me because the human brain is unknown. he told me my amnesia is called “post-traumatic amnesia” and it could be due the TBI but also due to the fact that my brain wanted to protect me by a traumatic time that supposedly i had and led me to the event that caused my TBI (a suicide attempt).

the point here is, maybe not remembering the exact day of the attempt is a positive thing, maybe having removed all of those painful memories really is for the best, but honestly i feel like i have a hole in my mind and there are also positive things i would like to remember: the first time i met some dear friends, the first time i had sex, when i would rule my school’s students newspaper

(Not really the right flair but the least not-fitting). So...be aware that, if you're active elsewhere on reddit with the same account you use here, other users might go profile sniffing and bring up your TBI in other discussions to discredit you.

I've had that happen today, got into a debate/argument on a different subreddit (someone asked about risks/consequences of a car accident in a certain car) and someone rant-replied to my comment about how my *experience* I was talking about (accident with that type of car) was wrong/invalid because I got a TBI. I don't know if he misunderstood that you can get several injuries from an accident, or if he was just looking to find a way to discredit what I said, but...he still decided to argue with (effectively) "you broke your brain, what you're saying is wrong". Which is annoying to say the least. Yes I got a TBI in the crash I was talking about/the post was about, but...I never claimed I didn't get any injury from it. Which that guy pretty much claimed :/

Just an uncomfortable/annoying situation you might want to try and avoid

My injury was 4.5 years ago in grade 5. I slowly lost all my friends and by grade 7 I was all alone, still having trouble making new friends. My old friends would get mad at me for not being at school, not being able to go to the mall, for my personality changing, for talking about my injury too much, stuff like that.

Over the past year I've gotten along with a few people (I'm not gonna say friends because I don't even know if I can call it that). Two people last year were super nice and then when I had a flare and was bedridden, I was selfish because apparently if I really wanted to go to school, I would've, but instead I sulked in my room and left them alone with our group project. They liked normal me, not sick me.

This year, I've made a few friends at the place where I take music lessons. I told them a little about my injury and they seem really supportive and really sweet. Like I genuinely think they enjoy being around me, which has never happened. They like my weird quirks and are super easy going.

My problem is, I don't know how to be a friend. They text me all the time throughout the day, how I am, what I'm practising on guitar, what I did, if I snap them at home they ask if I'm not at school bc I have a headache, etc. I feel bad because responding to their text messages feels like a chore. They always initiate conversations and I forget to ask them how they are or how their day was. When I tell them I had an appointment, they ask if it went well and if there was anything notable. Sometimes I don't have the energy to talk at all and I feel so, so bad because they're so caring.

When I see them in person, I don't have as much energy and I feel like a bitch. My sister tells me when I have a blank expression on my face (usually when I feel like shit) that I look like a bitch and unapproachable. I even have trouble smiling most of the time. I know that I'm socially awkward and different, but this is all really hard.

My extended family keeps telling me "nice boys don't date sick girls". I know I'm a pain in the ass to be around a lot of the time, but damn.

The other day my sister made a very hurtful, but accurate comment. She said "you're weird, you have more doctors than you do friends" I tried to deflect and say "yeah, but my main doctor is cool, he treats famous people, so I'm like on their level" and she said "no, you rolled down a hill". My sister is popular and smart. We're close in age and everyday I get to see what I'm missing out on. It's not that I wanna be popular, I just want to have friends that like me, be able to go out without regretting getting out of bed and being a normal teenager.

For context, my concussion came from when I went and boxed my friend who was much more athletic, taller, stronger, and heavier than me back when I was 15. I got hit consecutively in the left side of my head 3 times before calling it quits. I then went to the doctor who said that I had a minor concussion and that I'd be fine with rest and recovery for about a month. Then about 3 months later, I went to box again and I got hit in the same spot another 2 times.

(Yes I'm stupid).

Ever since then, I've had this weird feeling that the right side of my body isn't as natural as it used to be. It strains way quicker, like I get the burning sensation of exercise just from using it for a slightly above air-level task. My right side and my left side are both functionally equal and my right side might be stronger but that should be expected since I'm right hand dominant.

Balancing on my right leg is a bit harder than on my left, my right hand gets colder faster and more severely oddly enough, and this is probably placebo but using it a lot creates this weird hollow feeling in the left side of my head where I got struck. This one time when I went to the gym, I did some incline bench and my right arm started shaking uncontrollably, like it look liked jelly whenever I tried lifting with it which didn't used to happen and shouldn't happen considering my right arm is way stronger than my left.

Side note: I also have this aching in the left side of my head when I think hard.

All in all, my right side is stiffer and odder than my left and it feels like I'm controlling a robotic extension of my body rather than my left side, which is night and day.

I have not gone to the doctor and told them about this except this one time I asked this doctor's assistant why my arm felt so stiff and odd and she just said "carpal tunel" and I said alright because I play video games daily for long periods of time with bad posture.

The reason I have not told them is because it honestly does not get in the way of my day to day activities that much, it just makes strenuous physical work painful and tiring to a decent extent. That and I also get bad sleep, have terrible posture, am unathletic, bad diet, etc etc. I'm very unhealthy and my friends and family kept telling me that its my habits catching up or that its all in my head. That combined with the fact it hasn't interfered that much with my life besides making it generally worse slightly, and I've been too lazy to get it checked out because I'm scared of where it might lead. I know I should go see a doctor about this and I will.

MY QUESTION TO YOU IS

Should I be scared that this is permanent? I really don't know what a doctor can do if my brain circuitry is scrambled from repeated hits to the head. Is there anything I can do to make it better? Will this ever get better? Does anyone have personal experience with this? Will this only get worse?

Any comments are appreciated!

Hey Guys,

I am having a peculiar thing going with my recovery.

Long story short

Had Primary Concussion in early December

About one month after had multiple jerks and bumps to head go on to make 75-80% recovery by mid February. And this entire time I was good with Walking like used to walk 30 mins everyday and used to feel good doing that actually used to help with the headaches

However after mid February I was hit by the Flu infection which brought back all the symptoms again took me 3- 4 weeks and I got better mid March. So for next 7 + 10 I had minimal symptoms and actually also joined work back giving few hours working from home. But this post flu recovery/stabilization did not hold by end of 3 week of march all my symptoms are back Headache, sensitivity and now I got a new symptoms which is intolerance to walking.

I can't walk for 3 - 5 mins before Headache will go towards three zone. While I am trying to do microdose walking indoors it's very frustrating why Walking is affected now while on January and February My brain used to love walking, has any experienced anything similar to it.

Now I am just thinking how much more time it will take to stabilise, Have I joined work early, should I let my body in passive recovery mode or active recovery.

My work is not bad but it's afterall some pressure on my brain and thankfully my sleep is good. Can some share there experience and how should I go about from here.

TIA

Hi, I’m new to this world. I don’t have a TBI but I have been talking to this guy, we really get along so well, I met him online dating, he seriously is one of the most amazing individuals I know. At first I couldn’t gauge his interest because his communication patterns weren’t typical and he was very cut and dry and would sometimes blink out for days or a week but then always come back around and message me something really thoughtful or send me a little song he was listening to that reminded him of me. He finally told me one night that he struggles with multiple brain injuries and concussions due to sports all his life (hockey player, he still plays) and 1-2 major car accidents. He works a very manual job on top of that (tree planter) and I’m not sure how he does it. He gets easily overwhelmed in conversations we have or if I text him too much, and he’ll also block and unblock me on social media (I’m currently blocked and he’s unresponsive, but the last time this happened he unblocked me within 24 hours and DMed me to apologize and ask for my number again).

The reason I give so many details is because I want to try to understand him better, the reasons why he does this kind of stuff, etc.

Is there is any insight from individuals who actually struggle with TBI’s, what’s been your experience dating, and what do you wish the other person knew or understood about you or did for you to support you? I would like to hear your stories if you’re willing to share them.

Also, I’m a big reader and I’ve been trying to find literature on this kind of a thing. Memoirs especially, but any books that helped you cope personally with your injuries, or anything that you think would help me understand people that struggle with this. I really, really love this man. The hardest part is that he has expressed so many times that he is “a bad person” and that breaks my heart that he thinks of himself that way. He is truly one of the most remarkable humans I’ve ever talked to and honestly after he told me he had multiple brain injuries it made me respect him so much more. Most people aren’t half the man that he is, even after dealing with a lot less than he has. I wish I could give him the biggest hug and take it all away.

has anyone seen a functional neurologist and has it helped? are they legit or are they just glorified chiropractors? want to hear about your experiences with one. Thanks.

Wondering about personal experiences and how it has turned out.

How is Brain injury seen in this setting? In the legal community, Is it understood that this is a lifelong chronic condition?

Ive been doing great I got medically cleared from everything else I started a new part time job and had finals last week tho. After the second day of this I started stroking out ( playful way to say mixing up words saying different words than intended and forgetting what im doing) my head also started hurting more tham usaul at the same time. Ive felt extremly overwhelmed since and I cant seem to focus (more than usaul lol).id love yo hear yals thoughts honestly I really want yall to be like yeah thats normal cause I just got done seeing doctors all the freaking time. Tia and have a great day

After my brain injury, I started looking at clinical trials differently.

Things like:

Showing up at the same time
Following a protocol exactly
Tracking symptoms consistently

All reasonable.

Unless your brain doesn’t work that way anymore.

Fatigue changes day to day.
Cognitive load isn’t predictable.
Some days are fine. Some aren’t.

Even getting to the appointment can be a lot.

And then I remembered—

I used to work in the clinical trial space.

I understood how they were designed and what they were trying to do.

They’re built for control.

Consistency. Predictability.

Which makes sense.

But it also assumes the patient can show up the same way, every time.

So the question shifts.

It’s not just:
“Does the treatment work?”

It’s:
“Can the patient fit the trial?”

I didn’t see that gap as clearly before.

I do now.

Hello! I'm just looking for friends to chat with. After r being in a coma from being hit by a drunk driver in a truck, all of my "friends" ditched me. I think they may have been intimidated by not knowing how to talk to me anymore because of what I had to go through. I feel awkward, because the idea of asking people directly to be friends with me, i feel is weird

BLUF (Bottom Line Up Front): Cold water immersion triggers a massive release of the same brain chemicals that TBI disrupts — norepinephrine jumps 530% and dopamine jumps 250% above baseline, with effects lasting for hours. Six different neuroprotective pathways are activated. But there are zero human clinical trials on voluntary cold plunging for TBI. The biology is compelling. The clinical proof isn't there yet. Here's what the research says, what my own experience has been, and why a cold tub replaced my SSRI.

First Things First: Two Different Things

Before we go any further, there's a critical distinction most people miss. When you search "cold therapy and brain injury," you'll find studies on therapeutic hypothermia. That is not what we're talking about here.

Therapeutic hypothermia is a clinical procedure where doctors cool a patient's entire body to 32–35°C (90–95°F) for 24 to 72 hours in an ICU. It's used on severe TBI patients to reduce brain swelling. And the research on it is mostly negative. The EuroTherm3235 trial — a major multi-center study of 387 patients — was actually stopped early because the hypothermia group had higher mortality than standard care.

What we're talking about is voluntary cold water immersion. Stepping into a cold tub at 45–60°F for 2 to 10 minutes, on your own terms, as a daily or every-other-day practice. These are fundamentally different interventions with different mechanisms, different durations, and different goals.

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What Cold Water Does to Your Brain

No one has run a human trial on cold plunging for TBI. But there is a growing body of research on what cold water does to the brain at the cellular level. When you map those effects onto what goes wrong after a brain injury, the overlap is hard to ignore. Six distinct neuroprotective pathways that cold exposure activates.

1. It Calms Down Brain Inflammation

After a TBI, your brain's immune cells — called microglia — go into overdrive. Short-term, this is helpful. Long-term, it becomes destructive. Chronic neuroinflammation is one of the main reasons post-concussion symptoms stick around for months or years.

A 2021 study in Cell Metabolism found that cold exposure "protects from neuroinflammation through immunologic reprogramming." It suppresses the immune cells that drive the inflammatory response. Separately, research on TBI models showed that moderate cooling shuts down the overactive microglia through a specific signaling pathway (TLR4). Cold tells your brain's immune system to stand down.

2. It Activates a Repair Protein (RBM3)

When your body gets cold, it produces a protein called RBM3 — a cold shock protein. Research led by Professor Giovanna Mallucci at Cambridge found that RBM3 protects brain connections (synapses) from breaking down and even promotes the growth of new brain cells in the hippocampus — the part of the brain most responsible for memory.

In mouse models, boosting RBM3 provided lasting neuroprotection against synapse loss. The catch: these studies required deeper cooling than what a typical cold plunge produces. Whether a 5-minute dip at 55°F generates meaningful RBM3 levels in humans is still an open question.

3. It Floods Your Brain with the Chemicals TBI Took Away

This is the big one. And it's the one I feel every time I step into the tub.

Researchers put people in 57°F (14°C) water and measured what happened. Norepinephrine jumped 530% above baseline. Dopamine jumped 250%. Not small bumps. Massive surges of the exact chemicals your brain uses for alertness, focus, motivation, and mood.

TBI disrupts both of those systems. That's directly linked to the fatigue, attention problems, and depression that follow brain injuries. Cold water temporarily puts them back closer to where they should be.

And the timeline is unique. Unlike caffeine or a workout high, the dopamine response from cold immersion builds slowly over 1–3 hours and can persist for several more. It's not a spike and crash. It's a slow ramp up and a long tail.

4. It Boosts BDNF (Brain Growth Factor)

BDNF — brain-derived neurotrophic factor — is a protein that helps neurons survive, grow new connections, and repair after damage. Cold exposure increases BDNF levels in the hippocampus.

Brain injuries specifically reduce BDNF in the hippocampus. Cold exposure could help counteract that deficit. No one has tested this directly in TBI patients yet, but the mechanism is understood on both sides.

5. It Helps Repair Blood Vessels in the Brain

A 2017 animal study found that rats exposed to cold water swimming before a brain injury grew more new blood vessels in the damaged areas of the hippocampus. Cold exposure triggered higher levels of VEGF (a protein that builds blood vessels) and BDNF. More blood vessels means better blood flow. More oxygen and fuel getting to injured tissue.

6. It Trains Your Nervous System to Calm Down

TBI often damages the autonomic nervous system — the part of your brain that controls your stress response, heart rate, and sleep-wake cycles. Cold water immersion trains the vagus nerve, which is the main brake pedal for your stress response. Research shows cold exposure strengthens the "rest and digest" response and improves heart rate variability (HRV) — a key marker of nervous system health.

If your brain injury messed with your stress regulation, this matters. The cold face reflex — cold water hitting your face and neck — directly stimulates the vagus nerve. Over time, regular exposure teaches your nervous system to calm down under stress instead of staying stuck in fight-or-flight.

The 4-Hour Window

Here's what I notice every time I do a cold plunge. About 30 minutes after I get out, something shifts. My head clears. My energy comes up. My mood lifts in a way that feels natural — not like being on something, but like something that was missing got put back.

That window lasts about 3 to 4 hours on a good day. During that time, I feel like I'm operating at a level I haven't consistently had since before my injuries. The research calls this a sustained brain chemical surge. I call it feeling like myself again.

The timeline the research shows matches this exactly. Dopamine builds over 1–3 hours post-immersion and persists for hours. Norepinephrine spikes faster but also has a long tail. What I experience subjectively lines up with what the lab measurements show happening in the blood.

My Protocol

Parameter	Value
Temperature	45–55°F (7–13°C), preference toward 55°F
Duration	5–10 minutes per session
Frequency	Every day or every other day
Season	Spring, Summer, Fall (~6–9 months/year)
Setup	Outdoor tub, naturally regulates to ~55°F
Winter	Gap — tub drops too cold (see below)

I know the internet will tell you colder is better. And for acute biomarkers, that might be true on paper. But 55°F hits a balance that I've found works for me: cold enough to trigger the response, warm enough to actually stay in and relax.

That "relax" part matters more than people think. If you're white-knuckling through 42°F for 90 seconds, you might get a bigger acute spike in stress hormones. But you miss the calm-under-stress training. At 55°F, I can settle in, control my breathing, and actually feel my brain start to decelerate. That's a different physiological event. You're training the calm-under-stress response, not just triggering the shock response.

The research backs this up more than you'd expect. The landmark neurotransmitter study used 57°F (14°C) — right in my range — and still produced the full 530% norepinephrine and 250% dopamine surge. Dr. Susanna Soberg's research suggests roughly 11 minutes per week of total cold exposure as a minimum effective dose for meaningful adaptation. My 5–10 minute sessions every day or every other day exceed that comfortably.

Temperature: Finding Your Window

Range	Classification	Notes
41–50°F (5–10°C)	Aggressive	Most effective for acute muscle recovery. Higher discomfort. Risk of blood vessels clamping down too hard. Shorter tolerable duration.
50–59°F (10–15°C)	Moderate	Best balance of benefits and sustainability. Recommended in systematic reviews. Full neurotransmitter response confirmed at 57°F.
59–68°F (15–20°C)	Mild	Still activates cold shock response. Better tolerated. Less potent neurotransmitter release. Good starting point.

The key insight isn't just temperature — it's temperature multiplied by duration. A 2-minute dip at 42°F and a 10-minute session at 55°F may produce comparable total exposure. But the longer session gives you time to settle into the calm-down response, which has its own distinct benefits for a TBI brain whose stress regulation is already off-balance.

Start where you can tolerate it and stay consistent. Colder isn't always better. Sustainable is.

The SSRI Question

I'll be straight about this. I took SSRIs for about 3 to 6 months several years ago. They were prescribed by a therapist after PTSD and depression diagnoses tied to my injuries. They took the edge off. They did what they were designed to do.

But they felt like a mask. The feelings were still there — they were just muffled. I've been on a lot of medication growing up with these injuries, and I've come to be skeptical of anything that numbs the signal instead of fixing the source. I'd rather feel the raw version of what's going on than a filtered version that hides the problem.

During that same timeframe, I started experimenting with cold plunges. And every time I did a session at 55°F for 5 to 10 minutes, something clicked. I found myself operating at a level I can only describe as superhuman relative to my baseline — like getting a window back into how my brain worked before the concussions. That effect lasted several hours. Sometimes up to four.

I made the decision to stop the SSRI and rely on the cold plunge protocol. Every day or every other day. The net benefit was significantly better for me, and the only side effect was that cold plunges are, frankly, uncomfortable. That's it. No withdrawal fog. No blunted emotions. No medication management.

The published research supports the mechanism. A case in BMJ Case Reports documented a woman with treatment-resistant depression who replaced her medication with cold water swimming and remained medication-free over a year later. A review in BJPsych Advances found that the physiological changes from regular cold water immersion — reduced cortisol, anti-inflammatory effects, serotonin and dopamine release — mirror the changes seen with antidepressant medication and psychotherapy. A large survey found 59% of regular cold water users reported significant reduction in depressive symptoms.

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The Winter Problem

I'll be honest about a limitation I haven't solved yet.

My tub is outdoors. In spring, summer, and fall, it naturally sits around 55°F — right in my ideal range. That gives me about 6 to 9 good months per year. But in a Colorado winter, the tub drops well below my therapeutic window. And when the water gets too cold, I don't get the same benefit. I notice a cognitive negative spike instead of the clarity I'm used to. The line between helpful cold stress and harmful cold stress is real, and when temperatures drop into the low 40s or below, I'm on the wrong side of it.

This is an unsolved problem. A temperature-controlled plunge would fix it, but I don't have one. Some people use heated tubs with chillers that maintain a set temperature year-round. That's probably the ideal setup if you want to run this protocol consistently. For now, I accept the seasonal gap and try to lean on other recovery tools during the winter months.

The Risks

Cold plunging isn't risk-free, especially for someone with a brain injury. Here's what to know:

• Cold shock response: When you first get in, your body gasps, your heart rate spikes, and you hyperventilate. This gets better with gradual habituation over sessions, but the first few times can be intense. Never start with extreme cold.
• Nervous system dysfunction: TBI can knock your body's automatic control systems off-balance — heart rate, blood pressure, temperature regulation. Full-body cold immersion is a strong autonomic stimulus. If you have significant issues with these systems, go slow and pay attention to how your body responds.
• Cold-stimulus headache: Cold exposure can trigger headaches in some people. If you already deal with post-concussion headaches, be aware this could make them worse.
• Hypothermia: Staying too long in water that's too cold. Respect your limits. Start short and work up.

The mitigating factors: gradual acclimatization significantly reduces risk. Head-out immersion (keeping your head above water) avoids direct brain cooling. A controlled environment (a tub, not open water) eliminates drowning risk. And keeping sessions to 5–10 minutes within a tolerable temperature range is considered low-risk for otherwise healthy adults.

The One Directly Relevant Study

There is exactly one published study that directly tested cold water exposure in combination with traumatic brain injury. Published in 2017 in Neural Regeneration Research, researchers gave rats cold water swimming sessions (3 minutes at 4°C) before inducing a brain injury. The results:

• Shorter escape times and better spatial memory after injury
• More stem cells (CD34+) circulating at 0, 3, 6, and 24 hours post-injury
• New blood vessels growing in damaged hippocampal tissue
• Higher VEGF and BDNF — the proteins that build blood vessels and support neurons

This was a preconditioning study — the cold exposure happened before the injury, not after. It doesn't prove that cold plunging after TBI provides the same benefits. But it establishes that cold water exposure activates biological pathways that directly protect the brain from trauma-related damage.

Assessment

The science is pointing somewhere real. Six independent neuroprotective mechanisms. A neurotransmitter profile that directly addresses what TBI disrupts. A growing body of evidence linking cold water immersion to improved mood, reduced inflammation, better nervous system function, and measurable brain changes on fMRI. One animal study showing direct neuroprotection in a TBI model.

But pointing somewhere and having arrived are different things. There are zero completed human trials testing voluntary cold water immersion in TBI or concussion patients. Nobody has run a randomized controlled trial on this. The mechanistic rationale is strong. The clinical proof is missing. A systematic review protocol was registered in Frontiers in Psychiatry in 2025, which means the field is at least starting to formalize — but we're early.

What I can say is this: every time I step into 55-degree water and sit there for 5 to 10 minutes, the fog lifts in a way that nothing else — not medication, not caffeine, not sleep — has matched. The effect is real, it's repeatable, and it lasts for hours. The research gives me a framework for understanding why it works. The experience tells me that it works.

I'm not asking you to take my word for it. I'm asking you to look at the six mechanisms, look at the neurotransmitter data, understand what TBI does to those systems, and draw your own conclusions. Then maybe try a cold tub. Start at 60°F if you need to. See what happens. And if you find what I found — that the fog lifts, the clarity returns, and the effect lasts for hours — you'll have your own data point. And that's worth more than any study I can cite.

All the sources are linked in the full write-up on my site darkwolfmissionlog.com. Everything I put out is free.

Has anyone else tried cold water immersion for TBI/concussion recovery? Curious what temperatures and durations people have experimented with.

After some talk with my therapist - and then a panic attack over depth perception while trying to get a trash can off of a curb. It’s been almost 3 years and I think I need to start consistently using cane. I have a few in general from when my husband broke his leg, and I tried to use one right after my accident but I gave up because I felt insecure.

My peripheral and center vision basically overlap now in my left eye, and I have extremely bad light sensitivity. Uneven surfaces bother me and then sometimes I can’t figure out where I am spatially, and can’t really walk in a straight line. I drift to the right and my right side is numb and tingly most of the time.

I wear glasses with a tint and a prism, and feel like I get tunnel vision when im in the store.

My sister suggested a white cane, because of the freak out when moving a trash can. I couldn’t judge if I was going to hit a bike or fit the can through, but once I did it I was able to turn and see and looking at it from primarily my right side I made way too big of a deal out of it , but husband suggested a regular cane or a four point one.

Im incredibly indecisive but also never really asked doctors about using a cane because of anxiety I guess. But my therapist said I need to take care of myself and if it helps, it helps.